1989 IIRC, I was flying Montreal to Vancouver (BC) on an A320 after a meeting with Air Canada. Before boarding, the agent asked if I would mind giving up my window seat in coach for an aisle seat in Business (duh!) so she could seat a family together.
After a very nice in-flight meal and a few drinks, I noted a flight attendant taking a couple of youngsters to visit the flight deck. As the A320 was still quite new and novel at the time, I wanted to see the flight deck as well - so I signaled the FA, told her I was an engineer for Boeing, and would be interested in visiting the cockpit if possible. A quick trip to the pointy end to confirm, and I was taken up front and introduced to the pilots. Talked to them at length about what they disliked (non-moving thrust levers) and liked (pretty much everything else) in the A320. I was in the flight deck for roughly 20 minutes before I figured I should excuse myself and let them get on with the job at hand...
Those were the days